UPDATE: I used my borescope (my most favorite tool. seriously, buy one.) and found true TDC which was within half a degree on the harmonic balancer. Then I used the technique outlined by geezer in this awesome post and fiddled with the leads and their position in the distributor cap. I was able to get the base timing at 7 BTDC with the vacuum advance disconnected.

Now my question is, do I use the ported vacuum or the manifold vacuum? I was also reading that the Weber's are crazy with how much vacuum they pull, but mine is seems to run fine with the ported line.